Daniel Klein began teaching privately in 2006 upon returning from several years of living in europe and his studio has been thriving ever since. His private students include professionals and students. In particular, he has had huge success preparing students for college auditions and for NYSSMA. Several of his former students now attend esteemed music schools including the Julliard School, Peabody Conservatory, Indiana University. The majority of his NYSSMA students score perfect or near perfect on their adjudications and he has had many students advance to all state and all eastern levels.

In the fall of 2008 he was the voice teacher in residence for Mahanaim University, instructing the male voice students who have a busy schedule performing at major venues throughout the world.

He studied pedagogy with Judith Oas Natalucci and Carmella Jones. Aside from his own extensive performance experience his performance training has come from the likes of Sherrill Milnes, Jerome Hines, Carlo Bergonzi, and Martina Arroyo. He received his Masters in Vocal Arts from the University of Southern California in 2002 and was voted by the voice faculty as the "Outstanding Graduate." He holds a Bachelors in Vocal Arts from Carnegie Mellon University.

Daniel is a member of The National Association for Music Education, Opera America, Fractured Atlas, New York State School Music Association and the American Guild of Musical Artists.